Cita APA (7th ed.)

Quirk, R. (1987). Longman Dictionary of Contemporary English (2nd ed.). Longman.

Cita Chicago (17th ed.)

Quirk, Randolph. Longman Dictionary of Contemporary English. 2nd ed. London: Longman, 1987.

Cita MLA (9th ed.)

Quirk, Randolph. Longman Dictionary of Contemporary English. 2nd ed. Longman, 1987.